Jesus warns His disciples to beware of the hypocrisy of the Scribes and the Pharisees. They loved to draw attention, honor and glory to themselves and away from God.
Likewise, we are warned to watch out for hypocrisy in the church of our day - people seeking honor for themselves, and to watch out for it in ourselves too, as fallen men and women.
Jesus is the only One who, by His Spirit, can clean out the inside of people, so that the outside and the inside are in harmony (something that is not true of hypocrites).